Does anybody make them?

 

not that i know of.

 

Please, one step at a time lol - we can't even get test pipes yet *COUGH* TurboXS *COUGH*

 

I think you are going to find that the HR is pretty much tapped in N/A form. I have seen pics of the HR manifolds and doubt an aftermarket setup will improve upone them, at least not significant enough to justifty the cost/labor involved.

 

I dont think so. I think you can make 330rwhp easily, once cams, headers and other aftermarket support continue to grow.

 

It has tubular style manifolds already, probably no need to change them. Get some custom test pipes made and a free flowing exhaust. That should give you a little more power.

 

Didn't know it did. In that case, there is no real need for aftermarket.
I remember when the NSX went to tubular headers on the 3.2L in 97, there was no real need for headers, HP difference was negligible.

 

There is absolutely no need for headers when you compare cost especially for the cali folks when it comes to emissions and law enforcement officials hassling us.

The OEM 07 HR headers are free flowing, equal length, and are designed for performance. Weld on some tp's, bolt-on a exhaust, intake, wait for cams and you're well over 300whp.